These collets are made and precision machined in the USA and will fit any wheel balancer with a 40mm shaft. When you buy a set of 9 you can use them on a wide range of wheels. If you are having a problem balancing clad wheels, these are the solution! The dual sided design keeps it from bottoming out. Set Includes: #1 Low Taper Collet 2.00"-2.30", #2 Low Taper Collet 2.30"-2.60", #3 Low Taper Collet 2.60"-2.90" ,#4 Low Taper Collet 2.90"-3.20" ,#5 Low Taper Collet 3.20"-3.50", #6 Low Taper Collet 3.50"-3.80", #7 Low Taper Collet 3.80"-4.10", #8 Low Taper Collet 4.10"-4.40", #9 Low Taper Collet 4.40"-4.70". Similar to: Haweka # 51425, Snap-on # EEWB3-4, John Bean # EAK0315G93A, Hunter # 20-1846-1